County annual report · FIPS 19153
2016 Polk County, IA Power Outage Report
In 2016, customers in Polk County, IA went without power for an average of 1.1 hours, a total of 307K customer-hours (Iowa average 1.8 hours). That ranks 74th worst of 99 Iowa counties and 1740th of 2,391 nationally.
Compared with IA, the US and 2015
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Polk County, 2016
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 21, 2016 05:00 | August 21, 2016 10:00 | 5h | 17,783 | 12K |
| 2 | August 17, 2016 13:15 | August 17, 2016 21:15 | 8h | 9,582 | 2,425 |
| 3 | June 30, 2016 12:45 | June 30, 2016 20:00 | 7h 15m | 8,015 | 8,015 |
| 4 | June 20, 2016 08:45 | June 20, 2016 23:15 | 14h 30m | 7,261 | 13K |
| 5 | December 18, 2016 00:45 | December 18, 2016 05:30 | 4h 45m | 7,155 | 1,825 |
| 6 | August 28, 2016 21:00 | August 29, 2016 11:45 | 14h 45m | 6,439 | 21K |
| 7 | June 28, 2016 18:00 | June 30, 2016 00:45 | 1d 6h | 5,600 | 2,102 |
| 8 | August 2, 2016 11:15 | August 2, 2016 16:15 | 5h | 5,146 | 1,988 |
| 9 | August 12, 2016 01:30 | August 12, 2016 12:15 | 10h 45m | 4,944 | 20K |
| 10 | July 13, 2016 12:00 | July 14, 2016 02:30 | 14h 30m | 4,895 | 3,710 |
Outage episodes by size in 2016: 149 reached 100+ customers, 49 reached 1,000+ customers, 1 reached 10,000+ customers.
Utility reliability filed with the EIA
SAIDI (average outage time per customer) and SAIFI (average interruptions per customer) that utilities serving Polk County reported on EIA Form 861 for 2016, or their most recent earlier filing. Utility-wide figures, not county-specific.
| Utility | EIA year | SAIDI | SAIFI | SAIDI excl. major events | SAIFI excl. major events |
|---|---|---|---|---|---|
| MidAmerican Energy Co | 2016 | 3.6 hrs | 1.64 | 83 min | 0.90 |
| Interstate Power and Light Co | - | - | - | - | - |
| Midland Power Coop | - | - | - | - | - |
| Waverly Municipal Elec Utility | - | - | - | - | - |
| Consumers Energy Coop - (IA) | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about n/a of Iowa's customers in 2016; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 287,095 customers (ORNL modeled county customer count), including major storm days. It is comparable across counties but is not the SAIDI a utility files.
- An outage event is a continuous stretch with customers out; counts at 100, 1,000 and 10,000+ use its peak.
- Years loaded: 2015–2025. Polk County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Polk County, IA annual power outage report, 2016, data as of Oct 3, 2026 02:41 UTC, sources: DOE EAGLE-I (https://eagle-i.doe.gov/); EAGLE-I modeled customer counts (MCC) (https://figshare.com/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2016/iowa/polk-county